NNS Trainer (Nashville Number System, Musical Scale Degrees, Jianpu)

Choose study mode:

Notation system:

Keys to practice:

Knowledge Base & Guides

What is this tool and who can benefit from it?

Learn the purpose of our platform and how to start an effective training of the Nashville Number System and scale degrees without any login. Read more →

How to practice efficiently with NNS Trainer?

Recommendations for daily training sessions and a full list of keyboard shortcuts to make your training faster and more intuitive. Read more →

Personalizing your workout: Choosing numbers and tensions

Learn how to adjust the scope of your study via the "Used numbers" function to fit your individual skill level. Read more →

Why does the trainer use simplified enharmonics?

An explanation of why we prioritize practice and intuition over archaic terminology and how this accelerates instrument orientation. Read more →

What is the Nashville Number System and how to use it?

A complete introduction to the professional notation system from Nashville. Learn to think in numbers instead of fixed names. Read more →

Scale Degrees: Harmony, Roman Numerals, and Functions

Master the foundations of harmony. Learn what roles individual scale degrees play and how to use them when reharmonizing. Read more →

Learn Jianpu (Numbered Musical Notation)

Get to know the efficient Jianpu notation system and find out how our trainer makes sight-reading numbered notes easier. Read more →

Frequently Asked Questions (Q&A)

Find answers to questions about the trainer's purpose, support for guitarists, and the benefits of study. Read more →

Recommended Sites & Partners

Check out our recommended educational resources and learn about collaborations with the NNS Trainer project. Read more →

Contact & Cooperation

Have questions or collaboration proposals? Learn how to reach us for partnerships and app development. Read more →